Thyroglossal duct cyst (TGDC) cancer
|
Presence of benign respiratory, cuboidal or squamous epithelial cyst
lining in association with PTC and
Lack of features of lymph node architecture and
Lack of evidence of a primary PTC within thyroid parenchyma
|
Delphian node metastasis |
Histologic features of PTC with
lymph node architecture, including lymphoid stroma and subcapsular
sinus |
Pyramidal lobe primary
|
PTC surrounded by a background of benign thyroid parenchyma
Lack of features of lymph node architecture or TGDC features
|
Indeterminate origin |
Exact diagnosis based on above criteria
could not be achieved. |